Advanced

Functional characteristics of a tiny but specialized olfactory system: Olfactory receptor neurons of carrot psyllids (Homoptera: Triozidae)

Kristoffersen, Lina LU ; Larsson, Mattias C and Anderbrant, Olle LU (2008) In Chemical Senses 33. p.759-769
Abstract
With only approximately 50 olfactory receptor neurons (ORNs), the carrot psyllid Trioza apicalis (Homoptera: Psylloidea) may have the smallest olfactory system described in adult Neopteran insects. Using single sensillum recordings (SSR) and gas chromatograph-linked SSR, we characterized 4 olfactory sensilla forming a distinct morphological type, which together house approximately 25% of all ORNs. We recorded responses to extracts and single constituents from Daucus carota ssp. sativus, from the conifers Picea abies, Pinus sylvestris, and Juniperus communis, as well as from male and female T. apicalis. Receptor neurons were highly selective; only 9 compounds in total elicited repeatable responses, and each neuron responded to at most 3... (More)
With only approximately 50 olfactory receptor neurons (ORNs), the carrot psyllid Trioza apicalis (Homoptera: Psylloidea) may have the smallest olfactory system described in adult Neopteran insects. Using single sensillum recordings (SSR) and gas chromatograph-linked SSR, we characterized 4 olfactory sensilla forming a distinct morphological type, which together house approximately 25% of all ORNs. We recorded responses to extracts and single constituents from Daucus carota ssp. sativus, from the conifers Picea abies, Pinus sylvestris, and Juniperus communis, as well as from male and female T. apicalis. Receptor neurons were highly selective; only 9 compounds in total elicited repeatable responses, and each neuron responded to at most 3 individual compounds. Chemical profiles of carrot and conifers showed significant overlap, with 4 out of 9 electrophysiologically active compounds occurring in more than one type of extract, but a carrot-specific compound elicited the most repeated responses. We identified 4 tentative neuron classes and found a rather high degree of neuronal redundancy, with 1 neuron class present in 3 and another present in all 4 of the sensilla, respectively. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
sensillum, single sensillum recording, olfaction, host plant, GC-SSR, Trioza apicalis
in
Chemical Senses
volume
33
pages
759 - 769
publisher
Oxford University Press
external identifiers
  • wos:000260978600001
  • scopus:56349137666
ISSN
1464-3553
DOI
10.1093/chemse/bjn034
project
Chemical ecology of psyllids
language
English
LU publication?
yes
id
46097678-be66-42d1-bcaf-accdc5f7c7da (old id 1180841)
date added to LUP
2008-10-22 14:43:28
date last changed
2017-08-20 03:41:28
@article{46097678-be66-42d1-bcaf-accdc5f7c7da,
  abstract     = {With only approximately 50 olfactory receptor neurons (ORNs), the carrot psyllid Trioza apicalis (Homoptera: Psylloidea) may have the smallest olfactory system described in adult Neopteran insects. Using single sensillum recordings (SSR) and gas chromatograph-linked SSR, we characterized 4 olfactory sensilla forming a distinct morphological type, which together house approximately 25% of all ORNs. We recorded responses to extracts and single constituents from Daucus carota ssp. sativus, from the conifers Picea abies, Pinus sylvestris, and Juniperus communis, as well as from male and female T. apicalis. Receptor neurons were highly selective; only 9 compounds in total elicited repeatable responses, and each neuron responded to at most 3 individual compounds. Chemical profiles of carrot and conifers showed significant overlap, with 4 out of 9 electrophysiologically active compounds occurring in more than one type of extract, but a carrot-specific compound elicited the most repeated responses. We identified 4 tentative neuron classes and found a rather high degree of neuronal redundancy, with 1 neuron class present in 3 and another present in all 4 of the sensilla, respectively.},
  author       = {Kristoffersen, Lina and Larsson, Mattias C and Anderbrant, Olle},
  issn         = {1464-3553},
  keyword      = {sensillum,single sensillum recording,olfaction,host plant,GC-SSR,Trioza apicalis},
  language     = {eng},
  pages        = {759--769},
  publisher    = {Oxford University Press},
  series       = {Chemical Senses},
  title        = {Functional characteristics of a tiny but specialized olfactory system: Olfactory receptor neurons of carrot psyllids (Homoptera: Triozidae)},
  url          = {http://dx.doi.org/10.1093/chemse/bjn034},
  volume       = {33},
  year         = {2008},
}